Up to 300 million people worldwide are affected by red-green color
vision deficiency, also called color blindness.EnChroma invented
glasses that boost color vision by spectrally separating light into
primary color components before it reaches the eye. By enhancing the
saturation of colors, the lenses can improve speed and accuracy of color
recognition and enrich the experience of color in the world

Introducing EnChroma®

EnChroma lenses look like ordinary tinted lenses, but when
you look through them something amazing happens: your experience
of color vision is fundamentally transformed.

Colors
appear more vibrant, saturated, full, and yet without
compromising the accuracy or color balance of the scene.
Colorful objects, such as flowers, colorful paint and fabrics,
food, and traffic signs suddenly “pop” with a heightened purity
and intensity.

Experiences like a rainbow or a sunset,
seen for the first time with EnChroma, are magically transformed
beyond any rational description.

Of course, there is
nothing actually magic in this - it’s all based on science and
technology — that is, color vision science and optical
technology.

EnChroma lenses and frames come in many styles, lens types and
specialties. And the children's sizes come in awesome vibrant colors too!

Symptoms and Causes of Color Blindness

A
person with red-green color blindness (more accurately called
color vision deficiency) experiences the world differently
because their red and green photopigments have more overlap than
normal. By overlap, we mean spectral overlap, which is related
to how the photopigments absorb light. Let’s take a moment to
understand how that happens:

The photopigments are the
light-absorbing molecules found in the 6-7 million retinal cone
cells of the eye. When these molecules absorb photons of certain
wavelengths, they undergo a chemical transformation which causes
the cone cell receptor to fire a nerve impulse. The photopigment
molecule is then “re-set” and ready to absorb more photons.

Normally there are three distinct classes of cone cells: one
class absorbs mainly red light (called the L-cones), another
absorbs mainly green light (the M-cones), and another absorbs
blue light (S-cones). But, in a person with red-green color
blindness, one of those is anomalous. For example, the L-cone
absorbs too much of the green light (a condition called a PROTAN
deficiency), or the M-cone absorbs too much of the red light
(DEUTAN “doo-tan” deficiency).

Returning to the subject
of this spectral overlap: the situation is analogous to how two
adjacent radio stations might bleed together (which is called
“cross-talk”). It makes a mess of conflicting information, and
the more the L-cone and M-cone signals overlap, the greater the
confusion or extent of color vision deficiency. Can we correct
for this problem somehow? Well, there is hope: the eye is
fundamentally healthy, the neural wiring for processing color is
intact and correct, and for the vast majority of cases (greater
than 80% of red-green color blindness), the amount of overlap is
less than 100%. (If there is 100% overlap, then there is no way
to provide differential filtering.) Essentially, the system
functions normally, but it’s getting bad data. The problem is in
how the light is received, which is where the EnChroma lens
comes into play.